1ac27a0ecSDave Kleikamp /* 2617ba13bSMingming Cao * linux/fs/ext4/xattr_user.c 3ac27a0ecSDave Kleikamp * Handler for extended user attributes. 4ac27a0ecSDave Kleikamp * 5ac27a0ecSDave Kleikamp * Copyright (C) 2001 by Andreas Gruenbacher, <a.gruenbacher@computer.org> 6ac27a0ecSDave Kleikamp */ 7ac27a0ecSDave Kleikamp 8ac27a0ecSDave Kleikamp #include <linux/string.h> 9ac27a0ecSDave Kleikamp #include <linux/fs.h> 103dcf5451SChristoph Hellwig #include "ext4_jbd2.h" 113dcf5451SChristoph Hellwig #include "ext4.h" 12ac27a0ecSDave Kleikamp #include "xattr.h" 13ac27a0ecSDave Kleikamp 14764a5c6bSAndreas Gruenbacher static bool 15764a5c6bSAndreas Gruenbacher ext4_xattr_user_list(struct dentry *dentry) 16ac27a0ecSDave Kleikamp { 17764a5c6bSAndreas Gruenbacher return test_opt(dentry->d_sb, XATTR_USER); 18ac27a0ecSDave Kleikamp } 19ac27a0ecSDave Kleikamp 20ac27a0ecSDave Kleikamp static int 21d9a82a04SAndreas Gruenbacher ext4_xattr_user_get(const struct xattr_handler *handler, 22b296821aSAl Viro struct dentry *unused, struct inode *inode, 23b296821aSAl Viro const char *name, void *buffer, size_t size) 24ac27a0ecSDave Kleikamp { 25b296821aSAl Viro if (!test_opt(inode->i_sb, XATTR_USER)) 26ac27a0ecSDave Kleikamp return -EOPNOTSUPP; 27b296821aSAl Viro return ext4_xattr_get(inode, EXT4_XATTR_INDEX_USER, 28431547b3SChristoph Hellwig name, buffer, size); 29ac27a0ecSDave Kleikamp } 30ac27a0ecSDave Kleikamp 31ac27a0ecSDave Kleikamp static int 32d9a82a04SAndreas Gruenbacher ext4_xattr_user_set(const struct xattr_handler *handler, 33d9a82a04SAndreas Gruenbacher struct dentry *dentry, const char *name, 34d9a82a04SAndreas Gruenbacher const void *value, size_t size, int flags) 35ac27a0ecSDave Kleikamp { 36431547b3SChristoph Hellwig if (!test_opt(dentry->d_sb, XATTR_USER)) 37ac27a0ecSDave Kleikamp return -EOPNOTSUPP; 382b0143b5SDavid Howells return ext4_xattr_set(d_inode(dentry), EXT4_XATTR_INDEX_USER, 39431547b3SChristoph Hellwig name, value, size, flags); 40ac27a0ecSDave Kleikamp } 41ac27a0ecSDave Kleikamp 4211e27528SStephen Hemminger const struct xattr_handler ext4_xattr_user_handler = { 43ac27a0ecSDave Kleikamp .prefix = XATTR_USER_PREFIX, 44617ba13bSMingming Cao .list = ext4_xattr_user_list, 45617ba13bSMingming Cao .get = ext4_xattr_user_get, 46617ba13bSMingming Cao .set = ext4_xattr_user_set, 47ac27a0ecSDave Kleikamp }; 48